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| author | H.J. Lu <hjl.tools@gmail.com> | 2018-07-18 07:58:53 -0700 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2018-07-18 07:59:04 -0700 |
| commit | 177824e23274591dd549db0c0a4b569ee4ccd96b (patch) | |
| tree | cf8c36fe41f928b2dfcc50450bf5ea80411af22b | |
| parent | 00e7b76a8f44db5cdbcb2e561b8853fc93f3c070 (diff) | |
| download | glibc-177824e23274591dd549db0c0a4b569ee4ccd96b.tar.gz glibc-177824e23274591dd549db0c0a4b569ee4ccd96b.tar.xz glibc-177824e23274591dd549db0c0a4b569ee4ccd96b.zip | |
i386: Use _CET_NOTRACK in memcmp-sse4.S
* sysdeps/i386/i686/multiarch/memcmp-sse4.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/i386/i686/multiarch/memcmp-sse4.S | 4 |
2 files changed, 8 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index b466774bd7..5c2dd10248 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,11 @@ 2018-07-18 H.J. Lu <hongjiu.lu@intel.com> + * sysdeps/i386/i686/multiarch/memcmp-sse4.S + (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump + to jump table. + +2018-07-18 H.J. Lu <hongjiu.lu@intel.com> + * sysdeps/i386/i686/multiarch/memset-sse2.S (BRANCH_TO_JMPTBL_ENTRY): Add _CET_NOTRACK before indirect jump to jump table. diff --git a/sysdeps/i386/i686/multiarch/memcmp-sse4.S b/sysdeps/i386/i686/multiarch/memcmp-sse4.S index be37108987..bc2cb2729d 100644 --- a/sysdeps/i386/i686/multiarch/memcmp-sse4.S +++ b/sysdeps/i386/i686/multiarch/memcmp-sse4.S @@ -59,7 +59,7 @@ absolute address. */ \ addl (%ebx,INDEX,SCALE), %ebx; \ /* We loaded the jump table and adjusted EDX/ESI. Go. */ \ - jmp *%ebx + _CET_NOTRACK jmp *%ebx # else # define JMPTBL(I, B) I @@ -67,7 +67,7 @@ jump table with relative offsets. INDEX is a register contains the index into the jump table. SCALE is the scale of INDEX. */ # define BRANCH_TO_JMPTBL_ENTRY(TABLE, INDEX, SCALE) \ - jmp *TABLE(,INDEX,SCALE) + _CET_NOTRACK jmp *TABLE(,INDEX,SCALE) # endif |